{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "855989195",
    "entityType": "User",
    "nonce": "0x663cb42132f476d99f341ee0226d28f916018c23875d131d10b39fb7ca9c6846",
    "signature": "0xfbd28e1c8a56ee4606bb5438df7546479ebe2a0eb8692132605b20bc686772b80c8c7c45bc02545142b3207d80c80b520d858b3a7e60f20e53c1ba957af4372c1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}