{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "338352",
    "entityType": "User",
    "nonce": "0x8b7ae56002406d3035e7e3cb20f42168e6914c02287f0c1aa5d16746ba526ff2",
    "signature": "0xe181af3913421512c3c8295688992ab051a8d9b9b29b7f2909ab59daa0bc56d00df33a0aaf7df92b2be7ce53231cd7bbfb95ba4b85f1f1c61cf5be5ede6a85f21c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}