{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc3a081d6b0755ebba7e098ecea62277567d7d04d02959f607f1a62c88a1f0c2e",
    "signature": "0x015624e67861ebd9c13eb6ceb9f4929e0085586a4a4822a374413e1a157beca9694a039cc447c7673620313349f1ad511aec0c665ec0305ae2845be5346739ba1c",
    "signer": "0x3D72F472F9c46e8Ec6a8edC72cf87A95177A4E19",
    "userId": "76499855"
  }
}