{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0x95e4a49de3033b4405706835de53332f06f5c2742190f5897921bfdf43bb729f",
    "signature": "0x8783c757919022136e556ebf77ad51f6300d749547ed059aa4137070c9b4cc79613838f10c9802f26db2e3a939d40ee505f881d6b02003809f7741df6e900b931c",
    "signer": "0xd648B38B61b65e4F8df57D4EE65560D8DaacFDb2",
    "userId": "277314120"
  }
}