{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x03ae663a0baeb4d065a45abc33ec134262f1947713d090f99de4c590c50d3d7f",
    "signature": "0x8674cc945c4fef55d68395fb637bb84ba50e335fb991f085dec4fda23c21aa7718339017a01957350fae94b60b2f1ec1ddf6eb5278a3cc5cc3d356f7050ff8751b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}