{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3705661bbd983aadacfeddd10890c71e30aac1ea0ca5206234d2938700616105",
    "signature": "0xa908c18cd7f8e1be5928a141dc869aa5f88a6e52c5fa0c94873daa2b2cc21c513b414c14c1318fcf26a5945a43f218a84c6c0c9a0b8fa6042e41ac6545f490a41c",
    "signer": "0x530e72a1Be52b3D1404CB4Ab0e7a1B7239328bcd",
    "userId": "779780631"
  }
}