{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3c1e8e32cea97cd5f11eb0fea57d26574e1157edf070efef50dea5495cd6522e",
    "signature": "0x425abbce14c19954232feea465263d53382c88604a901b40516b6663efb3829c321b755b3140d72056935098e41342e5d09f2529f9d18f32f6833d4d9aad2a881b",
    "signer": "0x7fdeEB144300AC6b1Be0E83d8f006b2D3140F73D",
    "userId": "325377357"
  }
}