{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12737",
    "entityType": "User",
    "nonce": "0x5e8000216454d2a68691973518d8b61f9d9bc08f9fb4caee17551e1a7b33fce6",
    "signature": "0xe609f685584b881f9def42910c12e1b83d2bb277fd9b3e093062aef893f27b0260b7650ba49cf3d2e7066a0c7ae4bd658ad6846e7fcf48de0553c912cf6908e61b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}