{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9af584df2d741fcdebddac79eeb85b24b867b7db0ec8cb6f5fb393c31560ac57",
    "signature": "0xee7af729a29cb15eab86fd9dcb4a63f5016c2ad789705eeac1e37e91e888274d0b6456d02cbc36df0c0ea1a6de42878b60e705e5f9625828ecb044d6faa99f3c1c",
    "signer": "0xD24FfFB5C56D31307e1072d8DB324b7742FeF6E0",
    "userId": "882786016"
  }
}