{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x5188db3ad6e8d39e8830f65e7bf4953c9c8c3eb972259c9abbcb4d2bcd7a35cf",
    "signature": "0xc494a9b1c69d50a7f696b0bf5d141f54348ec68c4a8b597823d1bf5673484a3877808a2c628feabe783bc2b11911a61db70c49c7883bde413b0e3da291731d4c1b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}