{
  "manageEntity": {
    "action": "Save",
    "entityId": "1074556183",
    "entityType": "Track",
    "nonce": "0x3bb5d1a5e2b04b873a284b6750410b2737a4cc2c39d20b7629542e510d8c32da",
    "signature": "0x0d8204bbb217b4654d71ad2a45b95d2d7cdf634d80172e7a2742dc94bc0a56eb1feef86c11e8df63a472f2a9aeaf4cd135734adaab7a977612e7169cced85f091c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}