{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "983643",
    "entityType": "User",
    "nonce": "0x842ce570126c87042c61c04455146338c5ddcfb60c3bb5119fb9026bd7a1ed1f",
    "signature": "0x4e76d4d4bcd9b68a28c54b8d5182e1d9531cd0dcb504a63b29c794175d978065014f5549fb150beb1cf63a1837d71fbb5dcc1e5831d940a88ce98c48dd8b98bb1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}