{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "424151906",
    "entityType": "User",
    "nonce": "0x642a3538d66a024dce1ec3700dd234e18804c2839b207d1ed1bfbbe5e14348ca",
    "signature": "0x85f5858d205e1ae5ceff8e2a5b912e44d9a5c2dbd77737a40046b9a142502af959b94a62f8d30d2c23e149069038e609735b5c1f0c597555dae479a4f633e5fc1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}