{
  "manageEntity": {
    "action": "Save",
    "entityId": "1364391725",
    "entityType": "Track",
    "nonce": "0xe90197ef605a46d4b17a20aa1d623d8f197528d21a9f705f1ba968901af8b1e9",
    "signature": "0xa2c89be897a0c00669477dae38751a8b16c1a4da368aaac0d681635e99646dd70350d6bdfd714ba75ba16625b668d5d151d4ee268837c1c076e176557dc2fefa1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}