{
  "manageEntity": {
    "action": "Update",
    "entityId": "322663854",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera62qrhv73gxfdjdmiohqymysi42iwng6cjvghvpul2t7b2aigdkaq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":2116805197}]}}}",
    "nonce": "0xa416dace7e39706d67493217961d65fa6ed0e92b1511ff91d3b048e2cb8068bf",
    "signature": "0x4c7451b6306bc6e622ca892b08932cd36e2e25604860f117d228988d84df19235026ac5f9da34fd8d04eb0745eaf9043fbf13ad0e0ef033cd4ad14f86a785a3e1c",
    "signer": "0xBBFb57f7C9f15E0B0ED2b58d48a547a932DA5757",
    "userId": "322663854"
  }
}