{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5597308b0834af6a8f5d16e5331185fedd8f16e824954c5c23a577afef05b77f",
    "signature": "0x76ec255569ad240c6d321e1159d39371671daa81dc93f474e9d409a88044135f0e7def76b980957b2298e8579de233ab41311045fa843d2b1d30270bb7f1e94d1b",
    "signer": "0x550c6F46bcff1AF639B42658cfe407879C2F0a35",
    "userId": "205519424"
  }
}