{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xc52de31c25db596f336cd3ee5393acc779f0c73c03e726d3a1e096fa2a6317c9",
    "signature": "0x5950d9e0c08fcec65a0d43b08735ff992367c120f4fb6ae4d309d01dec827978376a9cab9eb4cb2abc00af5fe5fad0084ac05c9a7a454333abca31a65d0483151c",
    "signer": "0xb15d7053c985Edf1d74fFc9893ab67Fdc2B33090",
    "userId": "211545300"
  }
}