{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "358998259",
    "entityType": "User",
    "nonce": "0x7a7d245baf6f53954ee146d53675eb1a130877279acf9462ed636155cd4c3674",
    "signature": "0xedaf3ca9fcddc5cbfca28d85a286b59f8b516f7cbaabd40f9c96694f333b028f441ebd331f2ab193cae98f2cb30c3ee38905e73c35cc70d4528b2e6dc4ffcdf51b",
    "signer": "0x90d627796C9E2071AAd9F8C20f6dCE95587F6d13",
    "userId": "560619378"
  }
}