{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x12546abed188aed68d1cbbd7431803fe2c6d14db946b4920ed1dce6643b56643",
    "signature": "0x49ed5229c5ed739158ecc8c8c7799708bbcf1325bc862f3041f83d9f2a4c55070ff7d6d727d082f6852c9c8035fe7ef1c0154045b906310c59fad1d1233b6e281b",
    "signer": "0xe7e47058Ef107Dd487fb56Be1b71921Fc239fA0c",
    "userId": "943161575"
  }
}