{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "646495279",
    "entityType": "User",
    "nonce": "0x1a9b023e107d62e45598e37bf62d43f3b0ea1e06ce399ac8d79904135e66d14f",
    "signature": "0xa2de9432cef5fe2455b4023171f1bcb5a48198397f35db3dbbc512c8de52bb8068184b2cb76e2636712155102e2fe7f3eaab12cf8cbd86ea3c9461ba344e4c981c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}