{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "234728",
    "entityType": "User",
    "nonce": "0x971137223897015d4a400137b5d19b22604caeb287bb00feed2b1f04d610070d",
    "signature": "0x94eb00e7a7d7454d5c92795776c3bb7635096e52ebd9b85faa9ace7cf30f027c70cdb37e8c344857d3134529194208ed7b66ba4fcf3faadf538d7fa9ba5815cd1c",
    "signer": "0x4f7F6D917a2F3D961Ba722a09F72f01Bc350a631",
    "userId": "4350574"
  }
}