{
  "manageEntity": {
    "action": "Save",
    "entityId": "45314",
    "entityType": "Track",
    "nonce": "0xb0e3e9c2ce50120a683b8ad5f51b42f2c11c225bd97f7b93826c616913534d7c",
    "signature": "0xe9f5552bb4451c263d2b1ac95ca27d1762cbbe5b7f0c733c28e140da6529af9132c38d83f57c78956f26f4b9c6c469eb8e517d199e020a61ea9de12dd7dd613f1b",
    "signer": "0x53d8e61f7BdCd69E26B5AAe8F197464091224DB4",
    "userId": "99786"
  }
}