{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6901",
    "entityType": "User",
    "nonce": "0x811e685f8f65f904a3bd5868b309c24eeb16df4a803c743228ccf04f3d21ba4d",
    "signature": "0xc2619f9ca204f23c5252477eea046a3ad4e7d114d201eae45fd3b8e3f65d12821205c99425bc2b86ea5cc25762c37d6284ba639e0b349b9ad435e010ae33c2681b",
    "signer": "0x4230116F60d3989D218B84425D3D1Dd6C85e1393",
    "userId": "86128800"
  }
}