{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50962",
    "entityType": "User",
    "nonce": "0x15ffc4643bfcabb450196a7d75fb322b2424ab3b4accc29d490bbfb01d91b5e4",
    "signature": "0x8adc77c14a8750426b698694a337ae07d5f8cde9dbb5a9e4f0026e5749735a3150e39e0163dbd6ec01b1b7617e810ec3370ff5e1bddb56eca3d784fbbfd83c4b1b",
    "signer": "0xc6ED8841CAa23191AB374bd7d546F29746aA36B9",
    "userId": "441723301"
  }
}