{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "394450",
    "entityType": "User",
    "nonce": "0x0ce386d3ab8930937df61c7749a58a3b77d25ddcabbbda8b979335302220377d",
    "signature": "0x920dbfb3121835d69233cf93a07566b6fcb06f01517c41e603c4d0b14f76950b251281d9b566ebc0ac1b9f7523d4b99b315a6ce2f73e84284cf8e6c5e0d31efe1b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}