{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "532604076",
    "entityType": "User",
    "nonce": "0x7761ed3e24f13dd46f91898bca7874ded20c1827562b41e8f20d15744a5e448d",
    "signature": "0xc03987a65efafc30162571d2d8d0eb140650688db3701068e5ad7a30258f1e654a9015a82ef3d4473f7c687faa3694cab634a9526571b7fc208d4cb3bded82211c",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}