{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670307808",
    "entityType": "User",
    "nonce": "0xb45b31f63bbea22f646aacfbf38159a66e5bb5b1450ae9f8871059e5bf8c2a95",
    "signature": "0x24bbdba27c847ab30ea621872eca2dbea8f2d02e60660387d83501d7bcda44f73edc86c7d448a3f1e82e7a378ab1e7542db9828ecb1fd36cf2375d910fec6ba61b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}