{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306850",
    "entityType": "User",
    "nonce": "0xe4cb5e1ae367009ac5903068952999e8b8a0d67d890db7d0605c76adfedcf8a9",
    "signature": "0x19d2827ff68bc435f3e48ea3a209a78010fa5de719e800fb1a02c44d4637c8f65f97d9f590b4b4ad72b2e10adcbf7d9f68571ee174f72a4486250966979c85e71c",
    "signer": "0xeD4de8C7aEdcca7a62a5E17Fb9DF5ee4991E5b73",
    "userId": "209405413"
  }
}