{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "140",
    "entityType": "User",
    "nonce": "0xe3591429fab4b54829358493b5b8950af38a50a6f4786e0327e8fc4ddf652ee9",
    "signature": "0xc19e05c2a76b3ffe7be200145676b678bb67c76bb27e89cab5a74b99010f10247b077cd8c7deb3c6ac51d5151d7b9178c3721828e0ce2afe372d16ed1d8b53001b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}