{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "909603442",
    "entityType": "User",
    "nonce": "0x5bee502308b2181a47e4a7524c4e857a1f0860abd2782a60dd2853bd803a6473",
    "signature": "0x919e3ab5404767dd861224c426ea8108f2df83a56e96734442fcf7456d77377945fbeaefe7ca9da011ee97b6fdebb8e880e79d156593e684699ef9e6314f28c31b",
    "signer": "0x1F9dC682fadBAc94c0Dd4ca2232a3f490704a737",
    "userId": "737872723"
  }
}