{
  "manageEntity": {
    "action": "Save",
    "entityId": "701023777",
    "entityType": "Track",
    "nonce": "0x6ab5a1cb2b00ea711c10e362d3c47df2661c4df006a2a360f3cd3992e10874e2",
    "signature": "0x3eae971b6a718b47bfafbddc00595fb71ecaee5c7aa2751754ffaab31c6a5ccd5fc78722968c658c6bdb4fbd58883a892af5732d862663d2987db172034741711b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}