{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "771694",
    "entityType": "User",
    "nonce": "0x4a216b0d9c9b55840c6d941337395234f74da13a0ab4e708d1a28b450166d963",
    "signature": "0x630348e3ca0294fe0530cbf3f6c5ddd0af113c789e9c35290699c0bbfaaf95bc42f6cc49ac9e653973c42b44524105ca0c17ef0041bc548083929a04118274501c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}