{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "675830993",
    "entityType": "User",
    "nonce": "0x9243ea0f3fd0cb427715303b18d49b24eef0f16d58abf271eec76ea3d22d3a3e",
    "signature": "0xcf69115734880a4ab743328a14a975db22cbc7803509f22d1a537ac74293e8f134172c6d52a4ce0831762c4e6b04c64073b27221b859da1d73e3bbc672e20ad01b",
    "signer": "0x02e15765C61eDed8E41cC3ECE6C97dEE0F691c98",
    "userId": "729344507"
  }
}