{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5ac28723733e5f123e1276ee18fd3324b3f23502eee770c90497422c198b8e46",
    "signature": "0xae489a34c5871fa1d422d8f3d69b3db545f61335165d0ce3859adc3a50e020931e9d50b08eff2e585ea9cb20929adb52bf21742f35dfefe3f4d40628b3871c6e1b",
    "signer": "0x1D61574F8718baCf1aEb549218ce983283f63642",
    "userId": "472936837"
  }
}