{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x98b6d5bb6d673217eae54edc5e9937f2f2afc6c228639ba931366d43a87b080b",
    "signature": "0xba9930abe1706926ebb27812eda981b11a81b3afd5d8006a42b311f26a0a9b5c25c05c9777cd4fbc2b7b74b9a657e2a86a26c627752409bf69ecd1b6d1f09e031b",
    "signer": "0x864a8fDf81626eaa07De455D65263e042592E1dB",
    "userId": "22722668"
  }
}