{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390193787",
    "entityType": "User",
    "nonce": "0x1442436e732cb8b343d82656e66f1f2eb8c2dfbdff2fd0b52d3c4f38e3f933f5",
    "signature": "0x422c46e46e9d2863c22dd9d6a741b6ac4c7de7b0d5b95cf7592defac04349ddb32acdb608c30a9070ee2020d2867e8c9eba7ec1f3ac2934840127071aed244b21b",
    "signer": "0x0CD9dcF9fcCa28bC63B06fF92A4214f7Ed04b0aa",
    "userId": "733078358"
  }
}