{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x89b188f43fc16fb533ee2a6818bcb2aaefb57d9e87a3468abdffd0d73a06f40b",
    "signature": "0x7222cfed687f32b423c27bc85675db65ff45ab8774d57980af4255a1c9414e2e5542e743f9a9147ce9649ce2c3a50d8fa7770d4fef965da131f5852240a1725b1c",
    "signer": "0xD3185088F646fa4BAD5f754C478D2D489CF56ECc",
    "userId": "230757098"
  }
}