{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "906222947",
    "entityType": "User",
    "nonce": "0x12ba126e1580bb7d376869bc7245aec1b903d13ec7526503c46e8ea04de944de",
    "signature": "0x6e48cc76a46602d61125d1e13bb14a1cc9169c8b3d400b26d7233d452035e0883e1aba337bab22d2bdca087bf4cd8b488e9b2c7bdd08df9a391d02af720a3ff41b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}