{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x15caf3c7568724dbad1b38b69e89e63dd3cb6db71d58681a7d411be8ff832bb6",
    "signature": "0x77e85788d22f62de9729ca4a0d48b27abe2c12e560793101636a16a4836ece157107c89a1e98196b9213d2a630953f3bd1ea8fc0154fd4db921de80571154f941b",
    "signer": "0x4e87dc4B2AC993A4a3e3D104a2cf904Cef5aa0fD",
    "userId": "929523848"
  }
}