{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325624",
    "entityType": "User",
    "nonce": "0xb4eb2040ce9ac1abb03a6b4d8eed1d38c67436a4c6a5627c221bd2b8b1b7a137",
    "signature": "0x615f177494bc02dd97ad22d0def6662ceb1be50b2e34fde61911d4bd95a4d96c68a54674179db3ecb6bedc1bd4373de8fa5d904efa61f44efac5fbf6866a01981c",
    "signer": "0x812A96cCb2FC2BA429f669f4127ea0E48E65194F",
    "userId": "891610747"
  }
}