{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "285143",
    "entityType": "User",
    "nonce": "0xdbf0ce5f5e4e9cae46cfe12b1ef07784f9d0355c01af9a3c6127f6520d1f9a33",
    "signature": "0xa5a2052cf01c48ecb85cfe7c808b0ed8fc62e7f7fbbb3cbc69e89bad26c0141a63128a5b3f54c06a8ff234f7f143c13f0c71a5e03dc59b397c9430a3cf0967851c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}