{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5d64019d79c9f5d24b82bcab4eaed409eb2836a84badba1d019ed79023e86df2",
    "signature": "0x6331ebc3ab8d299f9f90d5b81eb4be4be027d2f5e38c5ffdbae45ac776b8b97b73d24c016fca22558420ff3b5de1cd19bdf11968c757470eaa419ef3b14fd1a21b",
    "signer": "0x4d2bafa39b79cDb25c6EEa1ddF19344d49C2BaD0",
    "userId": "829148562"
  }
}