{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991821949",
    "entityType": "User",
    "nonce": "0xd0317dd5891c2dca3ec297569ba8be0dcd8f027d325a7dd1d1110775d6187381",
    "signature": "0x9358d9ed8d81f3bd1cba3e41b65ac2ec49e584735804048f96d29fc9fc22e4a809435c8387696a2ff356f6761ec00ffa1af5a61c7b1cc7ba18d7e8cabae1b9241c",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}