{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xec8c5a7d611a632a01d038c33723dbd67c46f2df3f326f832eb7d2b6085d958a",
    "signature": "0x071e62686a9b854e1e18e3afe1c041d202ecb24d7ecdfe95ecd57d8e0d7daf720c85be15824f2cfea86d3a24cc4462c34a865fe6b58825950579165748bfc9121c",
    "signer": "0x1Ca1b0dD8C999C3DE081d614C49390Eb017c17D3",
    "userId": "746024683"
  }
}