{
  "manageEntity": {
    "action": "Save",
    "entityId": "1144699235",
    "entityType": "Track",
    "nonce": "0x9a5209eb8b81be684d64bc564dc6ac7b52c1edc9dfd79b7dcdf3715fd6f2c720",
    "signature": "0xe84e8bdd3bd1d4e18861e4ae45d49f30a0a864065ec0b8cbc3b04be7dc6bfab57f4ff7d788177b158a6cfe3dd59fb14dc86b860636d7d26b814a33c99810d84d1b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}