{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0xc38b93dbfefd53acc732adc7c0eef7d7de34baffca4124f52c817c12c9b744ce",
    "signature": "0x1b53ad4a998332d93f2931f93e88b9077193f43d3ed4bd13f305fffac8b96b7912b1d33df9114e7f2ba44ed038f7bacfd9b0070227ba4d0d7b2d915e94eb0b001c",
    "signer": "0x8C7c1057bcC83B88663c3Fe9bb0466Cb916441C2",
    "userId": "797231410"
  }
}