{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320417",
    "entityType": "User",
    "nonce": "0xef3ad9264b729b3345aad80940c522633541d9c10a392b41f7f68a7b13be6bdb",
    "signature": "0x54c333a63354c7216830c88dd9f9ae53704e0361dace67ab518501aa6e6c6222223ce1eec1a0297efff602c6d768eeb5348a702116b773b2f7702b1234bbd2de1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}