{
  "manageEntity": {
    "action": "Save",
    "entityId": "711148627",
    "entityType": "Track",
    "nonce": "0xf489b0e20b868fd2c78b61b11285a1512eafaa940afae93f7862f7d924e6b606",
    "signature": "0x8cbf22847d5e268ab3dd239a269882eda5db864051446262449884b50757fa491858d6ddb6fd0f2bc620f05389c14e8aafbcf48df713bf7b82d4719fc237a5521c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}