{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xd60ca5755ee80c3308cb9020c10c89178841036c443eb4357351bec1fad85647",
    "signature": "0xe491d1aab3decb79756d9942851472c5e2597c8787a54cb8d6b283a4bfb99039047bb231312deaab957f1722292f453ee9aa83b051df8b0d01e3799d67915b7d1b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}