{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102419",
    "entityType": "User",
    "nonce": "0xb3102de129a9af81e584a2146c6fda692cfe7e0e69519417c055bd6c873ec7d7",
    "signature": "0x546d629f19c6c29a3aac6f5fbb613d838fa1cf11dcb702fd54b7efa9b3785e586e54f4bbabcea4939267b19ff4104e90afa981e0dffdc0f908282616a2a0ed271c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}