{
  "manageEntity": {
    "action": "Save",
    "entityId": "242997113",
    "entityType": "Track",
    "nonce": "0x78b3eb293084c062934637bccf86933f044f897db21714b9b62ea4dd11ce47c3",
    "signature": "0x2329121c4c6e7712b6c6177d4527bf3cbde84a3691de42e14516a2edff4288b048058cdd3b3354ad5803f4a4534f1bf4cfd9aee7bef320397e7d78c2c4fc20bc1b",
    "signer": "0xA66d5981794A5e084FBD9adBFF28F465924fb9a9",
    "userId": "980224167"
  }
}