{
  "manageEntity": {
    "action": "Save",
    "entityId": "1156903388",
    "entityType": "Track",
    "nonce": "0x6355d38fa4e5bc24575cf21b36551e7ac37c3beff03e91bba91c1926e62b8899",
    "signature": "0x937316fcb7cfd57d62edd5fe9d89f168de44404ba5f9defd910cf22a5329f1d815b426bf45ad70d58f36b3a58ee1289cf33a850ae9f98baf1788772fd52e284e1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}