{
  "manageEntity": {
    "action": "Update",
    "entityId": "882520020",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4ffe3143919f79bde496c162da3dad1ba25f9545494cde23f846a66f0a1c6c72",
    "signature": "0x1c10f91af70cbbc1f58f358b86e546b80a3a5bec16a7ed13d0a7b6c7b14dd58561923083f82d850a8efae365a9244c39611757156c2d342fc18b4885dbf448191c",
    "signer": "0xA797f2caD913188AfeB40F3A3959403B873EEd57",
    "userId": "882520020"
  }
}