{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1633",
    "entityType": "User",
    "nonce": "0x3275f48ca1c01a27b7ae53e7bc89e87c2199da5188db7d244e107c24ab487fef",
    "signature": "0xd620f6dd3f1e1e27507d7a8f117581e3514b83a609bbc170a18072e69f4392ec37f364859c8c113df89779db992ec72a3f83469583d549a466177f8cfcccc5451c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}