{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "383477",
    "entityType": "User",
    "nonce": "0x66f4aeb8c75b48544067b72154c4a1271c3e5a0071665350cb9d976cac69a5ef",
    "signature": "0x0c68cd9f48832995279259c7c157f92163de6ee8b1efd945a3e9531c5dbdbc5c1c0988f51c66f2ce3dded7ed8c0b8d93b1db74cec460c74395c200cd489e91581c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}