{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0x296b6f73b5e66d636d4b0fb82ee5329c9df1091dadaf8b7e1da4b14c0ae6e3f2",
    "signature": "0x5d3f27a569d018d26122f20794060aa5ed21f4dfc4dbde4400b4b4f42b8617f6663d638a85e9db24b8157663fc038e729c2189053d6068c4312f60b6bf96ecb91b",
    "signer": "0xA2431a8293fD33C6289244D08A91489fF2C9f18A",
    "userId": "325308787"
  }
}