{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x3333cc2bf074ebebd5da74affa751cf3af8760af6be90111ccb3f19c22d37036",
    "signature": "0x991f8e056ffcbfd3db486905bbb6c33b05bd0e5dd0ab90ebb510f169f41498af3f7c562a81df85d009486f087dc78c7611ab31d50998ccc37cdee570d71258261c",
    "signer": "0xeBAd199ADd52C718Fdfe61bA3D46715564Acfd15",
    "userId": "977613650"
  }
}