{
  "manageEntity": {
    "action": "Update",
    "entityId": "548845534",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb7db1d50c0bfadd397de44044f7048bc11391498a91cdf009a9ecd15893c371c",
    "signature": "0x283a08a370b5187d5a4738ee4523c1a9bd60c0c15e2a361e7ca20d362d95d5351238b459c62f3de4a93bda87a14cab3666c75561f75dafc3261172cab41057211c",
    "signer": "0x7D57e0FDA0E2E7A6A95799E092De830e6DFdc2c1",
    "userId": "548845534"
  }
}