{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "916757808",
    "entityType": "User",
    "nonce": "0x2daa2a29966e5688f943a274b288c9d91ffff040f63392c0a9de7b5896d16bb7",
    "signature": "0xe138d21dba60ad5e6ac575e5dc1b41a7a2f4d91a776e8df21d0082135cc105f1698d54be05db5a03102e6d6383a818b7ec8c0622172606281abb363c4d3ab59a1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}