{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "322923319",
    "entityType": "User",
    "nonce": "0xe3b5a9fe45bc5c541846dbdbcebc8be9710b4bc04292f8b506751ccaec769b25",
    "signature": "0xe43f6ebc24f4699d385410b0a57c31433fcf6cf33a24569ba39e31e68d99b66a07b249ad914c15725e7f072d58a00a1158ed0403216a31726ab3c37ab31f98cb1b",
    "signer": "0x4C3319Ed2A4eE4e391d83e39b9e526Df4659cAbF",
    "userId": "517105107"
  }
}