{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9773d293c735efa9186f81e697b211869ed4ab8ef00345dae53c5da80749003c",
    "signature": "0x9a03b1cb3c831ea2a37a388205859c66ce85dae38f8d75df2e0ea94bfa86b86d38db8691580d3f301dfdeaac0368def97bc8068ece818f1ba1c613dca3f8c5781c",
    "signer": "0x60a4610517E9B5229440e4706dF2ff12E94B1065",
    "userId": "955617971"
  }
}