{
  "manageEntity": {
    "action": "Save",
    "entityId": "1206050590",
    "entityType": "Track",
    "nonce": "0x31dd824f0a4143b630f5a7bd1bd3c3930eefaf4cd9af7ac03c00bd9854d5391e",
    "signature": "0xd1c5ac241549e6219285fed95d7ac67b28932598d08e610f6553690dad3d67260ab8529f922e78287a6152a4d153a7b9b3c8abe27f3f9bee88b5907fe223a9b51b",
    "signer": "0x86639c74AAE287A0Af407ED9C633ba9D83645A84",
    "userId": "794995504"
  }
}