{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x150552e06147f6b207ccb67c79e2a06f33cd8d495019edf4cc411bcfa4e802dd",
    "signature": "0xff30b1b8a1b432c4e08355c860dabe76d0efa5a6a20395910e6eef08218aca9b33ac13efa0157adfb744110111f7932b10e0e33f99a5dc8dc3314e11b69d81431b",
    "signer": "0x1e98f68c39626Fd4ee303043937fFc9C934235d8",
    "userId": "903340761"
  }
}