{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306820",
    "entityType": "User",
    "nonce": "0x41d33c4fb2ee3fe3d4f5b81401de506230b7df0f23fdc93d0c6b138dd3b1f380",
    "signature": "0xa1131f637b541ac5a290aa3f61340a1ff3947178d96b527db7352d1cb52b3a613311233364019337d767a40fd914cefca395dde2b4a95258f3faae67586c01941c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "103994"
  }
}