{
  "manageEntity": {
    "action": "Save",
    "entityId": "228299",
    "entityType": "Track",
    "nonce": "0xaec23eb7aa500abaa5002e6a9a2daf946b4f7729c6ba1cc81843a795460afdca",
    "signature": "0x07a5fe0b24c76b6c053b498d16445e438030f2d374f8a34a7f0cdd976419c0a24e4a0bf446011b2982c377132b9482f3b39e07a0fdeb5262a601ed7cf4f255db1b",
    "signer": "0x5867bAE14128890dBB47F90EA5519F5282264F0a",
    "userId": "665414066"
  }
}