{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x74b81a489b9030ab867d0a553d67816c074144c4ee39e825bcf0c1a2aecffa17",
    "signature": "0x56b3934b1b7227f83ec86f1b666fbfdf0f5d8cea4216b66a547c95b7365b26ab3f334ed71e7162b1d3c6c578f9cdde7c4a26d40dfccadf2ef96e91f2ef23a37f1c",
    "signer": "0xF1fC1d1C5e0Fa2C37eb724f58476fFAff5ADbDdb",
    "userId": "557158813"
  }
}