{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "908088",
    "entityType": "User",
    "nonce": "0x644a21a43b62f5cb9d63760228bc435a3e1afb3a5ce7598f8076329bfbe51063",
    "signature": "0xda028fc71143cf52a09edd7018d2ac70a24239ac6215bcf2a23c4ef9916c7e7431b22420509426e1e884163e275c523ee30b2f6118afc958a65e52785f2186631b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}