{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100139",
    "entityType": "User",
    "nonce": "0x7a16c8012c1950449392128197b8bcdc54064c8300a471dd3b7327a6d30be705",
    "signature": "0xb2af299c628c48ebe659ab06a0462c2f89c4d6a69af2205d0736e603128cb8a23482065a73be25d802b024a165c565293fd0dd96dbefbe6dc6394cc2fc94ccb71b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}