{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x3bb2d13393a42f281e4cc289b53eb2f21d169ee9b9376de5c1a77da567ed92a5",
    "signature": "0x979740669d9849d34fd94415e2df8efefaada8fdebc410f9a09cfae557a646c83f0fd95f5e84994c75a2329053ff7eaef4b30914bf3e4d44dd09db9c445d91711c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}