{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x022cfcd6e4b648905cf2c0b63456a5ebb8ca50066b38e24ddfe77b2e4b52ec54",
    "signature": "0x9397507420034ba00cd36650a1314f1ea72d2dc93ae41b223324a4f9069544184d6e0906733acbc12c4f44610b9242bf5a34754888077644bbbe533e57026b151c",
    "signer": "0x3D21fd437e65B00cA2BeC485a4e143b28572B434",
    "userId": "59445957"
  }
}