{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x166f95927236e46421f299deb9f1a9df5ebccb66230c44bda65e2779e0a38f49",
    "signature": "0xf9e9971af887a41ddf650fdf671ad6e52b942cbd59f4f159d945d15a5e6b2b5555ee9ca49322d64932bb2b81493778405db45905de5ab58d37310e64459b01c91c",
    "signer": "0x623F4Ef45156b3E09BcfDAA0D7AD20726C314919",
    "userId": "372587631"
  }
}