{
  "manageEntity": {
    "action": "Save",
    "entityId": "165288",
    "entityType": "Track",
    "nonce": "0x4c1f3d7bfe28d930974b8c76c444dc383ee32e5256150c47fc2114e8fd04afec",
    "signature": "0xfe385d133271a40eec36ea3089a241abfd77195ae57dcc216e6bf40a160d228b04b393d4138913420155589846df4c110a008a2c7cb6c7dd56102113099d6f7b1c",
    "signer": "0x53d8e61f7BdCd69E26B5AAe8F197464091224DB4",
    "userId": "99786"
  }
}