{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3ea82f9fc5ffd68383391ed9d7d0188091fceda9e429e327aaed1130bfb87ee5",
    "signature": "0xd161ba23f870ef50a0b320de8e7499c8b86b0df39b714e2847997bf3ed918ef40641665415ade2c745e931271bf7eb221cec2dff2a7e75e3cc8e26728ce4db981c",
    "signer": "0x66FAdEf6C1819558315fD8F35BB6Da0459B18a0a",
    "userId": "859363529"
  }
}