{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc72643d0b234aca8ace0afc3094c18ef63be39d9b8ee4b15fc804884e20dcd32",
    "signature": "0x983b37225dcfe606bb73e9f71dd8e96b092ae2a11f3acea5dad13c2cb2412e7212a04c6304c0c89a40ea9c8d75a5ca926623faf0b8bd7d6d0a100a67b217f9141c",
    "signer": "0xC374083aad63317b8E2d3e0cc6E9207327178A02",
    "userId": "576389617"
  }
}