{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299030",
    "entityType": "User",
    "nonce": "0x216473f16a3f65fe4f7d998d38956f6a59276cad95816ccc6c104cbe28ece7a5",
    "signature": "0xd17c1136592942bb610198b30d79f06b4e5ea13c82ae7363cfdadb2cde747889488397bdc1ee098f2a207fdcf33cf7713e1cfbe6dbb1693c0aef23fc4f19726a1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}