{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x2a2b4a63b7a9a16adbe22a57719e695983a220f4b4a5e8bd12c4cdd07b0133fe",
    "signature": "0x9e62a48dec490757baafa3f2512ef0aa3cbd7b8cbaddc6219ac1213642734c5e79677ac3cf595db3bd5e313bd899b607d4dc77e99c6d6c066b1a91e950d764221c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}