{
  "manageEntity": {
    "action": "Save",
    "entityId": "495072702",
    "entityType": "Track",
    "nonce": "0xcc1abba3e1aa3b97b457b39996fe53cf8cf315acd59c27bcd5845af40f780710",
    "signature": "0x94f13a31cc1d758d13d424029426026065971d5400cc49c3ff8bbaf21b6daadd70fb137cc6815f58aee434f340ba6b34a0cf4701bfac7fc9d7e28de6bb48b42f1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}