{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325",
    "entityType": "User",
    "nonce": "0x4500385633ccd14b98cd159bad787d32b9096c0469f1e04cdbcf335db41965d1",
    "signature": "0x4065cd698c25f4bad16e7014f2f22078b45c031f5f7c13ecece3d85cc0148c5b6e03808e50b713ea034afb446d063483b33bd3bbf9363629e05ccdb61f24c4aa1c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}