{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "617072743",
    "entityType": "User",
    "nonce": "0x324589deece9c6822ac24cb28a398dd0023689b0f9dfa957e383f77955786c98",
    "signature": "0xb666c3a87d11c06927300a950e455ef4bfa033aad4cbfa262f231de9512f213040edad86d53d5b3c0da15e445b94561191f50078c602b2d1722bb37e3f312dd71c",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}