{
  "manageEntity": {
    "action": "Update",
    "entityId": "155413342",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1542e47a418313c6bde66b36282efb5e1595cd5bd2a67049e0e7fe98c1c0c08f",
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    "signer": "0xBf2aD48a2a83b2B64DcdF6cB3a934fe8944010bd",
    "userId": "155413342"
  }
}