{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0x57a70af2f447051cf823df72629b4a5079d6fac0b78c3e72d3dfcdccbb72d795",
    "signature": "0xb407fd4f44714ae9f1319b4163524a3a694867c5d92d40b1cb36f3c59958c5c26c9e2f5e77794f67cb9147cc3babde72ad34c3843ab3cb6ca80ff4d4c75f7c391c",
    "signer": "0x65c85412e96F9349649Ce71a3241C28C9A02c37d",
    "userId": "582968222"
  }
}