{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe1fa60561a51956010ccd5aa9721cdb934c83d4f04320263a82687a404d33933",
    "signature": "0x0d0fba8d52e66977898fb06248df051076186122ab90b7502eb263c14dd2c984711f2ad78ac0be8ccd4d3c59fbcd84ff419bef941e225aa4a2acba3adac3cb681c",
    "signer": "0xf661d714D27077835b9e5f4d5C59Db2a60835833",
    "userId": "460644567"
  }
}