{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaeaadbf41692517e6db8512d8ad1744ce206ae95af6e31e87e173f144f191148",
    "signature": "0xb86bac3548882a5e40404260afa8c3ad389bfcbd6b1acbb57a55babb88a910e70b58e362f429a75c4807b6a7cf5f7b75a7dfb8fb93f2dc2207b5a723f20a30d81c",
    "signer": "0xd45E8EF420Ba0b3Cb5b67FD7852a1c15A6943095",
    "userId": "768021692"
  }
}