{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "37391",
    "entityType": "User",
    "nonce": "0xca93eda61c96357a0ae199329743ff0834a295787a93ecdd31af0f401ebce60c",
    "signature": "0x4a9ce8132eb4cc6519c0c5bcab8576b5217e0bb30f340108e925a98489e4a2e4127ac9a90bb23c090f10d1d12ddb6202bf92ed0a1a0e23f42b723f34ad4f3c201c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}