{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "618242981",
    "entityType": "User",
    "nonce": "0x05f99379615638898e9380ea84a9e17fd508cfee1c66d7d9f1b6b43e02d7cb59",
    "signature": "0xea22ddb4ccbb0edbd3416d86b20f86fc66b8e1817eb92ea679ef71afad08a9eb49f06abb7197d844488facf66d60c3880d3f9fb769415d83d17aaf5d963306151b",
    "signer": "0x3D8B2928f8C6d3a1605187DacEb37824a527A1cB",
    "userId": "394450"
  }
}