{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x6f6c559254cb081619b23a37552a6c21a2dbcf54a94a3a340a9cfb9dd954284d",
    "signature": "0xe3eee8149b3e45261e4a2d069f41754fed72445411f3f5008fc157dc0b9c968c484bb5f8a9b1e27c01c4ee8b8d4e9e4e535e9433c63b41da6e72ac919bd1ee981b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}