{
  "manageEntity": {
    "action": "Save",
    "entityId": "566640712",
    "entityType": "Track",
    "nonce": "0xf25ed0f6bb0fb72c640d1d1334d5d6ebf1e68fe9c3f13f64fdbfd5c17b514ac8",
    "signature": "0xfdbe781c1f84a8e0a1f2700f005b247cd38053b1b1dc7cdccb2b98314df3b5906e50edfbe4a207f8fdab5c04fbbaa230904cd82dbad13432f97c7553541ce47d1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}