{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "768928502",
    "entityType": "User",
    "nonce": "0x9cf15172ea36c4bf44199afd1121d29c982e8fb69a7e8e6b11c7813033167b83",
    "signature": "0xd2d13caa3657096b632ac3d756869579342fa7e29a39652edca41d374159bbe624b9752595959069bae94a077c1532c28fe5d186edfeaef4e9c29f3ca3ce0a171c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}