{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x71f4d995bc1f445b0dd0cbee0f06efced5277f27c3eeb3b317be5ca295fbf1cf",
    "signature": "0x5115e69cb3862c50a0767056b361baaa350240c3c0f7b172d4f5abb4f70c12ec3c7737584dff6e4f750dbcaa4947a580fe779c0f3b40b45a855ccb8eeb4b3d791c",
    "signer": "0xa483554f94b9C669B84049D8E78edb9e1d67Bcf5",
    "userId": "339858304"
  }
}