{
  "manageEntity": {
    "action": "Save",
    "entityId": "1313668416",
    "entityType": "Track",
    "nonce": "0x4eda089a1980d9726c375f783cd112bf2c1d50e21bf468fa96d1b8c876bc415f",
    "signature": "0xfd32ffeef944f869de7ad4c642ca24f6cf59c99668e6818111412ab9504c91cd236c9b967805c772c71b5cf74a38eba7a81fe541ed3e43d9870b57180bc267ae1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}