{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0x7642ce3a78b84d3354f3d1ed08ee038aad65b2edad315adabfc21a3c40fec6f4",
    "signature": "0xc2810c5e2fb7ae304d1d2b1f955675be560f9f2a0bdc368199c4d42a11fdcc7f0ef7929450cae9bd78055ac10a88d5e87d2c19a79aff5a06635f84a3ce9b20171c",
    "signer": "0x0d0E0D19797534AEF52736C60B52793E9f88e24F",
    "userId": "603294620"
  }
}