{
  "manageEntity": {
    "action": "Update",
    "entityId": "108256647",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3287b708c6f09c2b4dae182f08e9df995be34083d8d860467341c3998a51e50a",
    "signature": "0xb115bf21423ff9915d1eb90bbfc080a72cc8e31778d8c1e54133831cbae3cdcb64aa87ad544dfaf39e491d91fd02b0919cfbd82eb954f55aa94e65084948398e1c",
    "signer": "0xC4e7DcD6A5AC88f4E86b3459Bf65129acBdd3794",
    "userId": "108256647"
  }
}