{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "109640",
    "entityType": "User",
    "nonce": "0x54c7597daf00c5203d8f1981d8c54ea49f064121f25b817032ac50dec5ec574d",
    "signature": "0x4d521442ad1ab05f7eba792e95f4dbc6f1ffc53daf9de96e9c66fa4ad4b5fd7f31ac650c0e4596af69b86797db6216aadd4bd9976f1a3c309bf80fb53ee276171c",
    "signer": "0xD55DC3bb788f477f695183900Fff41982fa8ecfF",
    "userId": "677613980"
  }
}