{
  "manageEntity": {
    "action": "Update",
    "entityId": "52363660",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3f712361392bcde7645bb97b266b24e654fc342400ec76108faf689615a735d2",
    "signature": "0xf789b1ae6ace344e4b211b881e7b7eec285f152de8e14f8170e133e7bc2be9cc6ef3a4823e9e8b03dc284ced65742cb783f2ddb60c95d21e305672d34260ca2e1c",
    "signer": "0x665E1c9fF53dd815F3d2A622b5BE329e9633B256",
    "userId": "52363660"
  }
}