{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xf8326ed7ce4a33def5aa9d713490c04cc4eb385820c4a9faaf4d8a08b6ee810f",
    "signature": "0xa284327e122e08cf66d857e6e3ece2b2b3316d6894b97016ffd1afa056bddf287d127ee96cb4658b0ba4ccce3dca0ecae276a9ef03c5d425a6cd72da839cfd961c",
    "signer": "0x54Bf4bCde33b2E24Cb1027FcC9d725FC4a7347ff",
    "userId": "138114417"
  }
}