{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2c705c29d511644a9e66eb0ad4a1960417bb4332a06a12ea163f62b1398d3124",
    "signature": "0xd60344cbb983f574b3015e4bff1b71dd3054ae9a513c05436f3f0aa4a06db3bc3dab9ee1bef0620e3fd8127c5f0d41a3fc680768cd8f4495ab60c40f53de3fb71b",
    "signer": "0x1b8900f6b161d2A764D77aDDCD8F3Ff1f59d2294",
    "userId": "625897998"
  }
}