{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdbe5b70d511de911124068c40ab8ef4ae75ea95dac26d6727456d46a1293708d",
    "signature": "0xc15f37b8302ef0221a09dca1fb2c4c78ad26aceb285e243c1d95253e4963ae2a33806ed50ec1245de1ddc72369ab9d6a59c268090e73edfea0788c136cce79b51c",
    "signer": "0x45139c1C6839e2aDF4B40362f420859B5d4789e7",
    "userId": "711646862"
  }
}