{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x72d69aaff690b47816dceca01fee1682bea716535ee2b89e63ebc745d0cb7c34",
    "signature": "0xa730ed1af32a2d888df3c9a8cdba4bb5b252b9523485ac8e0c6173ed8735c979585a3ba915d9f01deea99f5d9db7badfa30e4cdb9e8fa1686d120e3ffe54583d1b",
    "signer": "0x1cE2F33DB2a0c4041F19df291fEb25aac4c02e5A",
    "userId": "1870913"
  }
}