{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2988",
    "entityType": "User",
    "nonce": "0x4b5f183190b1b4a45d23adddb53b9e1c31425fa73b06aa1e37ed576452968fb9",
    "signature": "0x2ed40c1c9724079f019ab73c7d1128f7f05943a3b9ed30d47796d45b0b608e7225d09d1fa14bfc8261c7dee0c55922dbbd6b9bc87c5c042890b327bcac268d6f1c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}