{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670307808",
    "entityType": "User",
    "nonce": "0x6c122127406e8d25f0d2f46fe284b042a7f1b0844686682d5229828155c1f0af",
    "signature": "0xbf5b1b145f40da0f7c61de1dbee3b127329041d847481e44d28ac43dff417ef728ec9ef6c59ad69fd43dcff134b22e763a3baae885ac72c0a0ff89e5a77f8e491b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}