{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74203",
    "entityType": "User",
    "nonce": "0x4e5fd79ed1b37a02cb5a7a93db53652f3903fbcd0bdd2fe62e6340087dcfff55",
    "signature": "0x63cf818f207aa61a449ea44bcae33fff629e8840e1c775dcb0738e9ab764fe8b5cfbbd724de76b8fa855e46ed65e83c316bbbc244ccf1fb837957e3432102f641b",
    "signer": "0x8ce8B4fd5ED050E67C0aac70eAB0a188FD71eeC2",
    "userId": "757523374"
  }
}