{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "66373",
    "entityType": "User",
    "nonce": "0x7dcd57d740978ee6ca68fec816af4dbdf6d23349e77706edc022c60257fa068c",
    "signature": "0xf87d9c9b40ef36a402848fe56048517731db4c6ffc58efeb52f6865ae43e497f2fc4e4696741d6a5e26ee03026aa6549c5c05ac92b174a567dcac2c7b6147f5e1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}