{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6301",
    "entityType": "User",
    "nonce": "0x50a163516c142e904057e0461a2eed7ff4a1698cdd239e05f3e636f9c9cb7560",
    "signature": "0xaf95c7eecccbcccf442314c83bb15426110cefc2350f46acc5a56f769cd49773700f0191ab4176799f9db5a2108123a8014e2b1af6ade4d269ae0f166bb34bf41c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}