{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x81b6b13c533d4e10af9144b2df5bdcc88dfffb8c53de26d1d7e20ea4ced73013",
    "signature": "0xdef500b0776338543d6d760124884e606020f9535cf6850117a6d879039b1c070232994542a2c5bcec55367b63991e8aa1c443cf004c8488ed87e13b19d6a3b31c",
    "signer": "0x9d21CE6Fce92AA19683785584293d78CB94f54B3",
    "userId": "132035448"
  }
}