{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "713649918",
    "entityType": "User",
    "nonce": "0xaeb6b4b70a11cf860711784b1bca5ee65cc8c78aa505423cb7bcc8e82b1e44b9",
    "signature": "0xe2efa8a9e5911df3728aeca867aebc8b4cbe9414a9b2e54ac82295a0ac49971b513d3f772b50d99552ae9285df38427b428b22ff44bb6146fc2f80afd23096671c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}