{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "290283513",
    "entityType": "User",
    "nonce": "0xb7066615a325f273faabfdc0492677750c55168a5dee57d6bad933e7f16d15fb",
    "signature": "0x0a5cce2f7fd255dee4e5ebe5afd11f2d5255e450c8d1f94dd24307dbe7b7672a4ef76d61ef541ffddeb4114fef99509567de678d69af4684a7b2466c219379d41b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}