{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329513359",
    "entityType": "User",
    "nonce": "0xb37bccd5df2f7261a941e64e7074d21dc4987d478e9c7f836628e95214de9627",
    "signature": "0x57b8a57c2db3ed45b6a712a8dd3a089bef552a03fc93bc702ef54593793821324c6ca389b0748549ab9fd59bc6c54fadd90343505dc16fefdf5523ab7b2a272d1c",
    "signer": "0x3EFFF4df817177c0A8370597a286FB16Cd1DDd9E",
    "userId": "688850395"
  }
}