{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "844588084",
    "entityType": "User",
    "nonce": "0xd3721f1d95a5a9cbfcc2a38b32f5d72911e36d4f203c285359ba3c490231189f",
    "signature": "0x1b6bc10f6493f797ac86b34a7c24c2270b889e777535784f356a7408708e26b649d96a80ed46034f018049688a7466a0388b0c88a8a194404c371369127416741b",
    "signer": "0x89d83Bb2BF0C1Ad6B0dB1DE16DA35a110Ae37a6C",
    "userId": "871535685"
  }
}