{
  "manageEntity": {
    "action": "Save",
    "entityId": "1018102390",
    "entityType": "Track",
    "nonce": "0x0697ff27bd80edc3d093e6ddc2d37e2dc0837e23c7c5401fb27e656931560c9d",
    "signature": "0x5ff8e215cbc7973db68de80bd13d6fa39b8bc04956c0e91a2d404d680f65fc56511bf7f69acfca767e1b90fbd88e6d4adac130167071db619c199cdefd0d1d7c1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}