{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904559297",
    "entityType": "User",
    "nonce": "0xa7b55417d3aeef18af8cc76c185fa3e66ea82704a26e0c635e8e65bfcad89718",
    "signature": "0xb950b05a42a527b69acd3b20e2029c13f2709523e976cd2cfd35784897d2df20229b92b8acd048bc2a955b5882005ca00fd773e5e4538aaccbbfd3993b0a9b481c",
    "signer": "0x6B239e9B75f27b519de7Bad3a26a0b7d30e32D3f",
    "userId": "311257477"
  }
}