{
  "manageEntity": {
    "action": "Save",
    "entityId": "1136614470",
    "entityType": "Track",
    "nonce": "0x84270d7b3b007b55e4c7d2eaeb617757f5711d808526e3d04792535de89d6f5c",
    "signature": "0xfa58f5c4f073179f90f7f85dc0f2c6bda48dbe5a5f529fb45b384e6dc535312d324079905e22eaa0f8c1be1e1be169fb489bcefb94695fd1c7f3e130f1864f371b",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}