{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "146510",
    "entityType": "User",
    "nonce": "0x12e436c8b24895b8f8430b6481c7d24d7095724cd4e93d79eda59c51703b731f",
    "signature": "0x36e816aada2a0a887868252a336d64f9ef19fb05671c4d1c54e320f82fc4c45562315180c3278f0b5109bd4cd483f4c6ce6b9dbdb09e39599360cde6c23c6bf21c",
    "signer": "0x7A74554101a194B92cB5aA890412885BC756f37D",
    "userId": "3225126"
  }
}