{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5637eeca71e946944d8f9be0f3db16c2749551e2c480ed005b910b258deeff9e",
    "signature": "0xc68e56c2966925cd93481945a99326b1ec4ba7a7dc86697efbbc050e77b7316857c2c2c1177884de9fcd0e23ca6925e34e0c78476bf621ca9e7a57c2c6b8e3141c",
    "signer": "0x76C3c7e2126f85ed20008B94A2d9686d822EB9A2",
    "userId": "970440408"
  }
}