{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "241207",
    "entityType": "User",
    "nonce": "0x0402788436a6cb4c120e76a47eb7cf87ba7e68507bd48b9125fd5741e6e8a0a2",
    "signature": "0xe90eb090c0c0c290402b7246d4af17e696ffeafc6e20312bcf03bb048b6cafbd6ea61c550157e69e101d4bf8add67b3c746cfafd208e765a3f661a91926112941b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}