{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "454826545",
    "entityType": "User",
    "nonce": "0x77eedaaabd2de915ad9ad2fc2faafdf0449d60a15da7a1d29f784ca73865cd47",
    "signature": "0x51e4fc069824874715efa83ced0cbb62e7bd6564193d80295cb9fd497fcb851655a556a178b6a3ea271e026a21c36e4e62eafea648d04ea8e2d7f655c9195ca11b",
    "signer": "0xcd864e8A0A043bf1B2DA4106C35c1daF234468a5",
    "userId": "784246910"
  }
}