{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "346741915",
    "entityType": "User",
    "nonce": "0xaac1fa0e12e38789f99ff818f835e0c98afa8290590486e8ecd27d51416500c8",
    "signature": "0x7fd431674255948e56c8ce9944ef65a88da8116a7656ab51acd2f0f9305b1f6e257aa05c1232d86793130133ad9ff77763f2f43ce382de3832f67f667fbbcab91b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}