{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "173510966",
    "entityType": "User",
    "nonce": "0x6642a8bc984713997d2c2ec5b101e15f5b073a82e942c8918ae0c78b43de460f",
    "signature": "0x21a4bd02cd676d503746bac4fa420a830df6e90bf711c60adcb57dc4cfa31cc9287cb5e28f8e5a936bd4adef31ecb58574c1983d87ac75c9a8aa72f7e1ea23601c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}