{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "281227",
    "entityType": "User",
    "nonce": "0x53448a04964664531051a469ca342bf716e9c21f74d39a9735728e11f49ec1cb",
    "signature": "0x21e3bca5730aabb31cc6047bbe4f74ecbfb964e15e37d3c581f4f6b843cc428d0d037a1638ba9c5a64717f187f5500b4a8efdbc6db7498d0d0b21eb29c128c001c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}