{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354404",
    "entityType": "User",
    "nonce": "0x1d4cfb3b44f67304c614737ea953e2db4cef97d825a30701d5b31f9c15cf15d3",
    "signature": "0x44b9f775b4ccd6e2a428a69615efe4dadd6404d19006c969fa1e93ead50d61a752e5a01c5687e5086172e9b61206626da971736c67cb903715861b6562ff18a31c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}