{
  "manageEntity": {
    "action": "Save",
    "entityId": "272812539",
    "entityType": "Track",
    "nonce": "0x5df91240c713bd2626fd4ed97b49974984a2e1e0e53cf49bf90629262135a7b0",
    "signature": "0xc631faa64394c55e205dc1c41289195b65c67567b39941d4be05ef90916eb0d97bc505ff7f3979944aef60bf2378d53567a09108c892edf3497270b8cc5d0b161c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}