{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708035526",
    "entityType": "User",
    "nonce": "0x7623f2e791a9adf0aa74b5498562470e73cb36c60998425e659f8cd22c04f3cd",
    "signature": "0x48a91c142f6345e901baeaa808a1048da86af54053bfdbd725aa2730811236e614be003bf8100077925a41742c9660f777e47dea2b4dc5419d9491972c044a591b",
    "signer": "0x57D64A47c0B6C0789D9565B3D90270Aea276eB11",
    "userId": "199258"
  }
}