{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345624",
    "entityType": "User",
    "nonce": "0x7de3e08864ee50016e05137325125c4e8df0ff225bd548d66f626b5dac69c85c",
    "signature": "0x2161f0605f809d840ddff2d6d97e1d70de487e5610ef18335f95c4a49ca05a0155e2643d2bb314fd9e548768f186d389bbb289d3e4ef0e5142ff29f4a85443b51b",
    "signer": "0x4FD8D9B08667CCCa706De600C8242dcEFF01d9D4",
    "userId": "392873011"
  }
}