{
  "manageEntity": {
    "action": "Save",
    "entityId": "2000836341",
    "entityType": "Track",
    "nonce": "0xa5d3d8381aaace99a02544a7d0924a35c142acee7dc1033de97c9c7d190302fe",
    "signature": "0x68c9dd0e1975d54bce713be0b5a23c1482df844e5a6ad48f1644ed2321e1b8e966471e5713ec150d18c14bcd98a1118d05f72a5d71327a28ed25e760af550e4e1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}