{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3a3cf86458fb5c47cfa803a1495f778935cd50cb98dfd6c6a0a7439697732b96",
    "signature": "0x32dc70b9b3aaa49bf31f111666ebe58d23224926728ef8a2586abfe38c3cee346ee0c08bb3ac28eb44c220268317d3f774e86d53ce41041c963ee4c7999b5fc31c",
    "signer": "0xA3355277d463e1540cB0044c7C5BF85f124798B3",
    "userId": "148550220"
  }
}