{
  "manageEntity": {
    "action": "Save",
    "entityId": "1948171398",
    "entityType": "Track",
    "nonce": "0x48607cac7526f90afbd9623d3c1f71e137968a918a17b85bdc86dcc0dc2ccb62",
    "signature": "0xe41410ec965229dfb1affa021017742b1a3c72a1ed1421c9d246bb26e9f50430435c0e96ff83af1b7b083cdf95bf2d88d18c6c154ebc4b09c304b00303d473a31c",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}