{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "399633079",
    "entityType": "User",
    "nonce": "0x374b043e4c89313f68b0267040ae0b64f04583c813a75d7a6bc1bd5f486bc430",
    "signature": "0x3c934ee5ef161a25bc4ac5089f6bb5b5d029de17abc9fa2a644a9847b4ca861a7203f56214741f35e438bb652e713866d4e9334aaf170e10b6615c40a96cf42b1c",
    "signer": "0x71114Ff581aA73d1F4b6429D7713914f10e8e90B",
    "userId": "894513731"
  }
}