{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320009",
    "entityType": "User",
    "nonce": "0xe1b10b6de92a4318dba1b57949f414bb9d4389d63ce584a0b17cf7a36c5bcfd9",
    "signature": "0x76d15ad7efb2a8c9e2fae35626a13c822b1e74ef7aeeff9ab3a3cee84bfb2bf04c7e964835b4bbe44fc8384ebe777012180ba6528ffd3113d4dd67d732bdb1d51c",
    "signer": "0xE1606Fda4793C81543febFfc652aC7aBB1a33faF",
    "userId": "457856694"
  }
}