{
  "manageEntity": {
    "action": "Update",
    "entityId": "536694439",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd801336c39d75d57001dd0eed636a923a920fd479bc42bb34d086cf24e39fb60",
    "signature": "0x44dc20973bb9699bca6e691f7304c2d610557c29ddff9f19b557591cc6e3190d412e6e46664830b89c889759adb26907d89a66a2dae08285e36edfaf92ec5feb1c",
    "signer": "0x641a7cFCa4f52fA4DFaC2c272908362e7D26250C",
    "userId": "536694439"
  }
}