{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951546743",
    "entityType": "User",
    "nonce": "0x1c4d6a012a6d45ee8358c0930976ac56cb6ca7b4bd43a5914f54f691e5a5a6a8",
    "signature": "0x3f59c6d308636206e8bee9fea46930343a4886f7e67b142e5bef1e95a167c56b08f53a5bad9961e29516e40c1321fe54903e2ccb2ae5e74466f1436e11e2379d1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}