{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9048b95484273291a081527399bfb94d392b5522e1bdbd5558849bb1ae361967",
    "signature": "0x290d21cf83eb14ec52f25b1511b90448efdf7e64fec2070b0ebeba5b007e3fc75a64351d72d83d055076e7300475f1123fc82c49785f8b4dd5e7ca9c33bdd3901c",
    "signer": "0x90c0041acE11aDfC1bb0cd6567b59c5804861264",
    "userId": "97532602"
  }
}