{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57803",
    "entityType": "User",
    "nonce": "0x8dedb6885c5549ac4d4e9df6ad900c2cea371bc1cb07e4a82166a1fccee01b8d",
    "signature": "0x2b924ec6aae205ea3b0e8296afcd8cde1bc3b6f2d2ba084019efcd797a28c29a603c707c0d3de2efc66fe335d3bb7d8020360a55164ecc99d566c832ea9234e81c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}