{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1244516",
    "entityType": "User",
    "nonce": "0x83e6f8cd8975c8b3b61cf868d96d31afc8a02b13bd607c916161c417c09fb4c2",
    "signature": "0xaa6f1ef5f8d8e7bd24e28c6cb5aecbccafbc2251fc8fd11e2fe34d419f1b80de1a70ab5cf8abde46b9e37ae0a79e34ceaf59ec9f7f820dd5728758d746937e6f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}