{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb08478cd89244557d4615bc0ed702069e0e58cd7ad65a38f1c87303266c8778b",
    "signature": "0x76d2dd0c0285ddbed4ce9a42e6b94be8b8afdd1e751b9c1a5bb68f5c400f47e3755518a2d738761a55bfde1edd8b11a72b5091f74205c20d4531eabb009623ca1b",
    "signer": "0x7fdeEB144300AC6b1Be0E83d8f006b2D3140F73D",
    "userId": "325377357"
  }
}