{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "326850",
    "entityType": "User",
    "nonce": "0x903f89b64f3524a34536308c13ca0f21c6df1e25fe20eed0f6cb3b2da18fcda6",
    "signature": "0x8f9e036cf908fe70768d39c4785f866cbc2912305851cf0dc433c596c47b10d933858b1108107d6699ce0639ea0e37ba2ae78eca6bcfeb8ae004da185110c9b91b",
    "signer": "0xe74EA561439c78F34f4928Eb44ee8Bc5d67c3d45",
    "userId": "781858883"
  }
}