{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x21560fe471019fb41426fe92da4de357863c707d1d354adb7383b8ca2c506177",
    "signature": "0x15b99b8b7298009bdf02fdccebc660a8a28e711803e4ca07a4b0b58933f959311a0e366994caf91f29368a6654d1a49c56b9b4a45d344c1d2d36b3d03dd8e8851c",
    "signer": "0x6423bD165ac28EaC562F238bA1AF57F2b1bCDf30",
    "userId": "705143258"
  }
}