{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308439",
    "entityType": "User",
    "nonce": "0x03ba373a077d418f57350a0a2b5700ede587894b319749d81a29b221cb2ce6ae",
    "signature": "0x02dbccdbafd4ce8068a9d88ed1aa53f542275530aba35a3e2cf184b64d3b0baf651d568f38b77ae3da33bb5da4b91198cd7992ad0689193a1fe9cea8d423347c1c",
    "signer": "0x08d8b4B98a4aE10Ab809C1409291ab0c1E29D746",
    "userId": "644998197"
  }
}