{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "150975",
    "entityType": "User",
    "nonce": "0x5960c8e7826f141e56ad547a50015af1e3303b356f8f6369617146c09b807048",
    "signature": "0xf36cab05a09b3a3bdef24e154d76362d79e3c2de5ad16aae2feb54044769391a2322af44d8afd8662b5a06827695363ae589961ed6a84dff07b5f72b245002571c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}