{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520317695",
    "entityType": "User",
    "nonce": "0xac8f69f64f3bd930ec65c83d6598204eec45c1cbd4f75d913c67d8d7dc976d6b",
    "signature": "0x3b50553aefa5e70c724b91b5822100364453035c25d723bc012f0546b705e896320cae3cf4b1fb38adf845ce0ca03820b36edeef5403275c41955ff7719e05991c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}