{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7a6a43d6bb82b99ec01c9edb495cd834c70d17a47662feaf7f73a93c67d6ca33",
    "signature": "0x93265fe47543546d4157d67f5187a866628526729a360b48efa19eedefba40d165eb87fbdedf2a1d8b8179036d7dfb0cdfca0ae81a06dbd25991a2f035d40f851b",
    "signer": "0x21a2423004D1eB7ACD8Bb7484B59a47d90842952",
    "userId": "882797864"
  }
}