{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x5bdcc1a92844060f889574e5c42dcf7ec977acd02d649299b306c7568af93e84",
    "signature": "0x1c7724a71f4675e2a2add3c736e89db36691538b66012dbb1b28e8f53359e4cc45dca1435bc54bc4815bb49f8635f179523bc6ec6caa54dc8565dace1a6909a31b",
    "signer": "0x34649001338BAa3aA03834d9c137aeE28C6334e7",
    "userId": "560525349"
  }
}