{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325624",
    "entityType": "User",
    "nonce": "0x5b853cf2c4f43afbbb27b75c560a93ac500f93ec8656c466dc9be2337bf9e0c4",
    "signature": "0xa3c7bbd5e67568c225343bf1a0663d81ba1b0f897385cca071d91d0b7ccc48272e36013a2864ae0ebc76bb2eae1d8a6c61606e1cd8d293fa1b0f159b188241531c",
    "signer": "0xdA4448A94942BB1d74B134dAe4e71F0A65E8a180",
    "userId": "669480134"
  }
}