{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887547386",
    "entityType": "User",
    "nonce": "0x7693be611982775589504ae1f88d985f8c76d223b16fd495ebac63bea835b900",
    "signature": "0x753524ec659576ddfdbd375d1402733e19f6c206c0e7210ee1c30ea1b525a4767f7c8702417c214afbff49691138d994ab81fbf2cd9f148d63c943765bec14421c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}