{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x02904385f0f3388b4d6e06b33440f7e98797005ed5b6b8d73eab1570aa2dc1da",
    "signature": "0x33330b8af3a709fe2078fb95651e40e7a8c1dd0948ca393a505065f6a8ff6f5151735a3aaf2f39be40507396b1d4db411a504077b0fdba3a470dad8a6b9e67b81b",
    "signer": "0x8A64785d05192D66C9118D967E19021491A2D5de",
    "userId": "995332578"
  }
}