{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x750839471a328b7336c86fc0d814614b72d49e507603baee4bcd8be37edb4ccd",
    "signature": "0x360fd4358a045a015326c7523f9f0e9e3d5fa7a5d705a2061f19cab1b7b1ab7e360c5cbe4a11ab7656fe326cee1d588b09f8aa0baf49b860e8927146594716b51c",
    "signer": "0xAd948EEedA4AB2d06bF3150Daf2D25De733e7Cd5",
    "userId": "175201368"
  }
}