{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54865",
    "entityType": "User",
    "nonce": "0x99ad68538a507805734b3cc85f728dd3e2f522ca48e5439ef63dca8e749f5173",
    "signature": "0x8ed1ddf49dd4070fe6e0f894da2f95da916870ece640a39b999ee01d39042d0474c9a0b518cc3dbaa346ab723b66bea75e8848d6485bb1ccb8da5240ccfc05891c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}