{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154589",
    "entityType": "User",
    "nonce": "0x30b6d90d704db8b2e33df355d0039b45dd7f96eb69b75563d3568d2256f476ce",
    "signature": "0x4de5adddd3110fd70acde28bba46f98230be4718b49dd657bad112873a0ee1d40a4e57c42646e2e914b105454d53cfcb543e477146574cd21a1508070a892a8a1c",
    "signer": "0x745895918A1926af8a7B4C34Af51BdF98bf5C7C8",
    "userId": "54958731"
  }
}