{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "923551697",
    "entityType": "User",
    "nonce": "0xb3f2747b7c455552fcfbcece9bf9bffd9ed2af7dd21a6b81900351f81c33ad28",
    "signature": "0xfe53cac442ad97a1c42c04bacc6f62a003b5eb65c0744ece04230e8395d1fd9c6c2fe1afa38bc0948e0976b99108bffb6b5012479ec28adcbb1bc99d3f1514351b",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}