{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18998",
    "entityType": "User",
    "nonce": "0x54a2a99794763adf5d2738b3bf8e7b7435e095546feac97999b7cf786ce8a5b1",
    "signature": "0x0141c9e3b658df36b572db62f9b7b37ef6d1f53f8daf4392170c0fead146c93672225968df82a48590e83f04437566575e1385f32dddf2e045dec826f8bd8a141c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}