{
  "manageEntity": {
    "action": "Save",
    "entityId": "1133088",
    "entityType": "Track",
    "nonce": "0x983b3298da61f6f62bc088fb09c8861751dbc5bd16b97a25f25b8789f99086c2",
    "signature": "0x94c4f61ab0f7801194994da7f628908fc26004dc410997c46fc8e52ff1fd1e225d13e835e043da5fa7958da0fb7d391c30b931d7b1641eaade06aae326cfa4bb1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}