{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "537763049",
    "entityType": "User",
    "nonce": "0x6146413584b6b326e010b191c60fb89956b36d84442a662802b99f8f0a7aac83",
    "signature": "0xe69c860aa6a7d9824bafaf3fb65e715a6f0865ffc6f487d67e065193fe1df4980bca172d1153305992b53cf09e5519c979272b70af16d2dd8eb930ceebc6ee5d1b",
    "signer": "0x5e6d01F8B70091388F9Fc78aCe897341e3696c0f",
    "userId": "335869800"
  }
}