{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12615893",
    "entityType": "User",
    "nonce": "0x79ea62114d1e978a92a142df648fdc18afe3a078c943c6d20a632c054b89874b",
    "signature": "0x4906aec50e069aa88615fe5074fc4d18b4f95f8635416eb349f790da446dd80b559de36f553373bbcd6dd839d204e7f8fe9cd5b361353c4b73daeaef9838b25e1c",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}