{
  "manageEntity": {
    "action": "Save",
    "entityId": "2061072144",
    "entityType": "Track",
    "nonce": "0x6bd7c323f347f92c6afe78d685063050c7ec04555d4d939ab1e18608a900cbcf",
    "signature": "0x1ca11ee36895a32d70fea40218bb16d9de190a08118f4f66fed046c460437a11340cb8d85927010b173d88f6ad6fc3b1180fb0a6747aea2a3baac2b99027c9871b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}