{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10449019",
    "entityType": "User",
    "nonce": "0x3759dc772efe50f1bfa9bb1c4aa40fa347f09e699f7866fbb57bfa3f19b176db",
    "signature": "0xf88418fdfdba8cb6c4c35e66cb01df9fff3832a948c09601c99097090568c6f96e64d21cfa630d37cc4889bcee1588013086b456e26e9fe813bbe5c55f7a70e21b",
    "signer": "0xA2431a8293fD33C6289244D08A91489fF2C9f18A",
    "userId": "325308787"
  }
}