{
  "manageEntity": {
    "action": "Save",
    "entityId": "1767064095",
    "entityType": "Track",
    "nonce": "0xefcc64b0d412d53272b95e2b33633871b2b2ece31c011d204111bd928a7f0c3a",
    "signature": "0xf9b478a966d71632f0808d6417f0d1d3b0fd94674a88c4056ee4561bd5007d2f4106f5c20728325d78ecc10510e9877bd3f99959ceb5b1cc3e046869bdc9add31b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}