{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5bc07b3a26c897ea874bdf9ad56a3b03374a72d74ba5a078309b6c95baa3d7c0",
    "signature": "0x393289191b21e3660beb53e6a2bfc399c52d44012aedeeee7a3cd6a0c80c0753015baeabe75faf8369f06b23b0211deb59f9008043f54103c7d4b257ee6f8c1b1c",
    "signer": "0xb9ddEb112c6372f799a4c15a4CC20eFdF56aC1eF",
    "userId": "605067669"
  }
}