{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "964612383",
    "entityType": "User",
    "nonce": "0xc6862682dd41aa3fbb7239383aa14c556f0425b69af8c27ac541ee5a7e756416",
    "signature": "0xcdbd6639b96bfcdeb289771b92d3d66bc1d0237e55ce9f0022354bf19a3edf2d21cd04c84829b355e50e6a28eabd60fec0d03bdb1300ed50762f1f896ad6b0f51b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}