{
  "manageEntity": {
    "action": "Save",
    "entityId": "1091440271",
    "entityType": "Track",
    "nonce": "0x86fc291522a6df6be607c5c0a27225fa52e79141fb6698fe98a59d81e35530fe",
    "signature": "0x107323f6ffaf7f5ba53c38d6ec8891503e63adf061903f82a51cf9e3f59ddc034fa8f796e0613c86cdef6d0010b4f38d48c39f7c66ccc57d84bd88b649cd77e31c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}