{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "214659",
    "entityType": "User",
    "nonce": "0x7db422b86a879e73788d32054a8a539c495f4b9351cff46834fbefabbe599034",
    "signature": "0xe2dd424f339894a709d7772f0d6e7452e1abbd9248c6a99c0ef1530b22c89d815245e9bc457a669165b3a5f42748f7ba10ec53c24e3bedb78e7550e4252280741b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}