{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8819",
    "entityType": "User",
    "nonce": "0x9d5de575c093472bbaad19dab79f3712a56bc72bbde97b6f0fe0e1806d0f5798",
    "signature": "0xc771eec941465423bdf7b674637eb3a6337c7bfcc4d78593763d96ff113666b801a89de7970cb599506227f1d27c45047efe99eb6bb27e0bfa648b078ee4da6b1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}