{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5be90b30b23e7cd915eef3ae12cfcd876cd787254e7da2df577312c0f76023eb",
    "signature": "0x3eada0aefbd84c58c76624b49e162fca40cb3b24a35e892e0f458e5f7e825b611519170e971f0f4d55337333ad175bce1753000e523024e75f9f1e2054993a011c",
    "signer": "0x91988274645Ac38858e5dA1c49C63A8B2C3D81cb",
    "userId": "862499607"
  }
}