{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301606",
    "entityType": "User",
    "nonce": "0x63e3920b2c6cb57166c35cf8dc85201dd91db5d598cb62cdbf870778505ea0e5",
    "signature": "0xb9343140a9dc15a7416da0f2192beb89beee3be9b5e0006ccb0c827dc109b053605155182c974a3ee4a6287d64fdcc237210b743f885aa7d2e20d8bd0828c7cd1c",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}