{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xabd9ff68b52fb2b0c489bef2ba537da9065e4d22c2d8d1e543186def70c4b2a4",
    "signature": "0x9c948b744168bfc718bc5c16242b567b09c8044120ac6e4d70cbeeb4392a7f0735d2df9b7b8fdd2594c64aa0d672353f26be72654a5666a1d7c4f4d92de25d841c",
    "signer": "0x9222fd469d5905C6e5497fae8D2B3a42036E3b1f",
    "userId": "956961571"
  }
}