{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273403361",
    "entityType": "User",
    "nonce": "0x16c1cec4a635421ae8a5da6af86d2cce02f52c38f22f0c1c6b14a6e18b259620",
    "signature": "0xaa2fc03d624233dc272079399c80168eb8e2d8478812e03e0fe38e6147b6caf975860d578979660f28070bcf1da12faae11577a1dc904a66b53a5a26b3bd03a11c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}