{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7fc18cf3315ae9b3da7fd3274212114b31d03aa8d0cbf02d5fe422ebebe07f12",
    "signature": "0x55f1e1609f6145a5ed123b4a43a72bc992eb9d711d9b8fc1a7cf9972e40629540e9a8e2d3e83817df8c6f4c7403e4248a684264b62807024a7a0ad8bcc6847501c",
    "signer": "0xE0fc08b1d87BDd03Aa8152998171395862D6b24A",
    "userId": "234413065"
  }
}