{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa29b8fb54bf12714291862eb60cba88866fcc3482d89b018c76e7ee1f93ff7e1",
    "signature": "0xe0aa4f8f39f6f1f11b4a7781e1b3816cfb130d352fb6b494989c1afca8e751dc2405ae0aeafa502b05c400c84ff4a16b234b8dbb2cc0abe91b9afea083740b491c",
    "signer": "0x9acF8CBE8f2B0d51e756C58D6d1f946A8757602F",
    "userId": "428941685"
  }
}