{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x331d45cbe8921f9789e6e1251059c7c1fabd86ddfd105e7041e5d8429613956f",
    "signature": "0x5aae170ed635cd3aecc58c4e3661cc40ac78459fbe3bf67de4757c9e2b2adc981678d018cc9b7a290f998b8db43e14e5e444b70ab05fd0536f16fee895d348e91c",
    "signer": "0x3C0b787AF69568597dFe72D6ECdC516b6aED70de",
    "userId": "480175650"
  }
}