{
  "manageEntity": {
    "action": "Save",
    "entityId": "95182925",
    "entityType": "Track",
    "nonce": "0x29c8a93ddaadc0a54ed9f17d20fede11d08e56d4fbdcedac832c594d50168ae1",
    "signature": "0xa83fc977a98b90a033a514305c996170ef20bcb936a959b02059f6f7a720a748182e59ec328abd18ae6e357be35be63d81d4c387a67b3d377be21d66a23b9e171c",
    "signer": "0x5E1b23614a9da638dba09e8aB2E9B76ed81c688f",
    "userId": "306948669"
  }
}