{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x996ca15ad3e4837f007d9fef3a46e057806cb5adb524e672aa3f0bce0507db11",
    "signature": "0x347774fd7627819177a7fed95997f38ec44e440d716b1f252b0a2bf7246cc61844ad9695ad266dc8f3fd7667a772282715930a8aa3761761a2c8cd69def5e00f1c",
    "signer": "0x451d1Fcc610ac6c427d570E73Cb3641Acfa23b6b",
    "userId": "134623867"
  }
}