{
  "manageEntity": {
    "action": "Save",
    "entityId": "1289955125",
    "entityType": "Track",
    "nonce": "0x92b1410d36f4a658cf5bad480a54d8a9b5349384c7024a65e83f179a2fe918bb",
    "signature": "0xaf1a577d83fc5f54a06a12f96ca4d8595fe68bac6f9a3cc3ca82c3ebb9da3a1d03d3180fe6c4357c1257c1368758464a941803798a08d6158ba38c90c73bedcd1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}