{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50936",
    "entityType": "User",
    "nonce": "0x7e0b5732249d86ae975c9de974d2d8eba63123c4a4e7299d03a1c21586da5c25",
    "signature": "0x4539f45c7005b3179489320dcb192ea96e374f40e518efa2b194f56d5fdc541846af61a09faf55070cbb0f615c1aaf26f15932e0864b8ad737952dd26a2a85071b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}