{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x17a7e2ec3ec2ee977d7f96c451c45bb2fe2a512089c3ce0ffb0b25233d8e1997",
    "signature": "0xd550879afc150c77908730f143ee905d6fdd3651417ff4d5762c6dba9295346a44edbeb72e94c83363c8957ff6e61436552b1019d083bc9c96da737b5e3e465f1b",
    "signer": "0x395C0a6F5ba56922e157A34a23Eb91f015BA02b5",
    "userId": "422498403"
  }
}