{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325172820",
    "entityType": "User",
    "nonce": "0x6c9bcc9a29ab6442adef9a6dbdb492e45cadf3c31b2c49ceb3cb96238aa7c259",
    "signature": "0x09c35d8f504ba9274d58626f3476f651d8db03a428fbf6c013f85ef1cebf13b73fca393709279566c9d4aae24bf8be336d3389c2d370d4fc88d2fa086569433e1c",
    "signer": "0x367680E9B4EfE77a6636091FA6c2c71749Cf7C60",
    "userId": "40274"
  }
}