{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144",
    "entityType": "User",
    "nonce": "0x02437f78bbb483827c083434821a4a4a5f337c4c4dc684611df49b42fd65b6f5",
    "signature": "0xc6a4cf5471ebf12e48a605368bbc0d7fd09b3e5fb6188a36686d1064fd8c6a51317f1f7e7d2bc11e081a5a7d0594cf3c22654843c5f8dec549d8a5f7137ce8e61c",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}