{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "837713671",
    "entityType": "User",
    "nonce": "0xa24b2ae5cd32f2f16059a137a87c34da5fa714006b195a3616837cdbea10b63f",
    "signature": "0xc6ddcb4df5ab5baffe1aa7e5cdfbc447a016d09a18af28b38405adb04218037b32ed5b8479d59b040533274147055c04da6c87ce157617c33417a4430b6790ff1c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}