{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "258307",
    "entityType": "User",
    "nonce": "0x61b5725df733c4a57e4c421cb2ee9e0d66f94633433bb42da4b591600d58475e",
    "signature": "0x423ed414b097c34000bc0a2507a56cc98daf1a2f1b860721d246cf45f56c9fc57bb532ebf2968a6646de3faa5059f69c245c76b5991deb718f157aa1e6966e0e1b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}