{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389126513",
    "entityType": "User",
    "nonce": "0xaef3efb7c54b629350b22f55ca5a88fa8d5ae66847c14c3e5faf181a79c7a5f1",
    "signature": "0x8d97415fd15b97e1ec7f49f862e0a2e8d8c14bc3be63366d1806d9fe4ce2010e0012d63b29a6e2ebf9c8a8a7b2b8975988a6e45894e2a643172b168e608123af1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}