{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318",
    "entityType": "User",
    "nonce": "0xde2d7106fb55150f59fe5ccc529a75d14fcea063ef3a302a09dfda1bed23f961",
    "signature": "0xe96d2abcefd5db02e210cf0945ffe183afbceb9aeda760d89f5a25c6f8d668fc27066df63c80e430e21ef62a0c292e36583ba482e7d4568dc1f194e931b06d3d1b",
    "signer": "0x81a6976298DDa0B267D3c5C2581EF2671a909f4b",
    "userId": "410531907"
  }
}