{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3d8e333073af428f05d2a4648f429f555c145d22920db635b8eac52a365a7448",
    "signature": "0x702b7d33b6906f64b480633099ff0022961620ff224c8f087c55f4a4e1c6a0cd2f730813cc9689b9dc373b079bfef303f5347e62af8694b02ee5314bdc8ae7491c",
    "signer": "0xF04CB7d781A33393bfBfee5068D968477e2CBA0E",
    "userId": "105453223"
  }
}