{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4589",
    "entityType": "User",
    "nonce": "0xefc92a71e7e6aee75f619a3ef077c9b6a71348f626ac3540c4a000f6008ffc3e",
    "signature": "0x3942ae7c5a6d6dee6d2a546c4cf2ee0cf4d93c20baea1d9c9e4a0a2ecf17d86a322155ee5418737dcf018767251c43f7bbc5cbcaaa494b3ee0fc0e9161027afd1c",
    "signer": "0x4086Dda2D91F77cd46De0859a4de37F888508faA",
    "userId": "568518925"
  }
}