{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306850",
    "entityType": "User",
    "nonce": "0x9055f56e5a1a77bfbaaaae6ccff45b42fa26ad6c483a88c61b7966310c5fd691",
    "signature": "0x4f23991f54aa80bb07b260279f68609ef1e3704e28ed987eed6509c6636441727f96b93e9bd09bb92229f47ef000597b0a0db156419dd1c4cbf38c8d35a140841c",
    "signer": "0x75d782C5a68f76DfA69c426479B6ad14383D035f",
    "userId": "328056745"
  }
}