{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "440819111",
    "entityType": "User",
    "nonce": "0x5e3395a26b76c6f8e631fd873009218d94c6528f0cd2e8d787ed32379eb22e4a",
    "signature": "0xb07df257ee4f07853b4b39b220708de9e87a752c5ad848ca85b51ce1cbb84f896a1a5a924be7cd05c219a13df45ef481f5dc9f60a8ee8085571f5be6fc97c6c31b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}