{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "210352",
    "entityType": "User",
    "nonce": "0x9e82810ef714bc94a101f996d2b516e3c07ea0ad518291057f69c7ae8c6c3a3f",
    "signature": "0x5a5e5021454a1f3604be1798b4f5f9dcf07f41202a8bbf297035892d5dc44b406b173447fa535ddc270fe6e94f18788c508133c651c5e902cd5c3e4eae682e0c1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}