{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3449",
    "entityType": "User",
    "nonce": "0x44894ceb498205bde973040925582c817e8b8ea777307e00b12e93ec99d465b3",
    "signature": "0x80c2037d45f3e5ab36bbf35f21f7239ddcd5fe53488b86989b36f99f242cc7b704c3f7099fa0a8f7baaeed71fac6156e1cae65c512be4fa50072115c1c05ce151b",
    "signer": "0x32e5e224E0727A7B2CA7FBC47b945D1B1A59abDc",
    "userId": "76829893"
  }
}