{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x78d81ec8a1a10973f7e6d68e4b19821c2447b4e00f0aee58d6240a5d0cbbaa16",
    "signature": "0xcd00757006c7b4645d8472fecd6369085b4728f2356d64e61e928d2a3f006e6c06985284ac8268f09c49d252648d1ff08d95efec58209bd8a96a5d95b9ea58be1b",
    "signer": "0xb69378245091a2698004E9133B69F31277A55b33",
    "userId": "90532574"
  }
}